Xhorse multi prog will do GM Delco E38, E37, E39, E39A, E92, E67, E82, E80, E83B, E78 and E98 ECMs on both bench and boot mode.
Jtag (boot mode) will read full backup Delco ECMs. If doing boot mode multiprog will ask for 16-digit password (password from Shadow Flash).
The importance of the shadow flash (password) has been discovered in the previous post here.
Multi prog will also recover the Delco ECM with the shadow password. Multi prog does not have the option to read shadow flash diretly. But you can still read the password on bench mode.
Here is an example of cloning GM Delco E78 ECM and reading shadow password using multi-prog.
Select ECU- Chevrolet- Cruze- GM Delco E78.
Check wiring diagram.
Connect ECM with multi prog follow the diagram.
Read INT flash data of the original ECM.
Read data successfully. multi prog will give you 16-digit shadow password. This password can be used for boot mode reading.
Record the password and save flash data.
Disconnect original ECM.
Then connect a donor ECM with multi prog.
Back up flash data of the donor ECM.
Write original ECM flash to the donor E78 ECM.
Write data successfully. Multi prog will give you another 16-digit password for boot mode writing.
FYI:
OBDSTAR DC706/G3 is better on cloning these GM Delco ECMs. It will full backup eeprom, shadow flash and int flash data.
